Kattegatt Swimrun part one – It doesn’t have to be fun in order to be fun.

There is this thing with swimrun and adventures. Or better yet, crazy Swedes doing crazy things. They just keep spoiling us with new out-of-the-box swimrun adventures. The first gave us ÖtillÖ, the second, Stockholm Archipelago Ultraswimrun Challenge (SAUC), and lets not forget the one where 2 guys Rasmus and Simon did Sweden to Finland‪ addnatureöstersjösimmet‬, or Team Ultraswimrun who packed their gear and went bonanza in Lofoten last month. Next up is the amazing Swedish team Kattegatt Swimrun, and their Denmark to Sweden adventure challenge. Follow their preparations and journey here on WoS, a really cool swimrun adventure.

/The WoS Team

It is in the middle of the night. I wake up in a pouring cold sweat. I get up and drink some water to cool down. I look outside. There hangs the wetsuit, just the way it does almost every day. The dream (or the nightmare, hard to tell) is the same one I have had so many times before.
It always circles around the same thing. The big challenge, the hours and hours in the open sea that lie ahead of us. I have had this feeling many times before, before big races, before the Ironman, always the same. Only this time it is much scarier, because the challenge ahead is so much greater. As much as I fear it I dream of it, I cherish the feeling, I look forward to it.


Kattegatt Swimrun is what is on my mind.

The challenge ahead of us is called Kattegatt Swimrun. It is not a race, just a challenge. My long time competition partner Fredrik Hägglund and I plan to be the first people ever to run and swim from Denmark to Sweden via Laesö in the middle of Kattegatt. The sea between Danish Jutland and the Swedish west coast.

Planned legs

The planning of this event is totally dependent on wind, waves and water temperature. There are many things that have to coincide with each other for this to work out. We are looking into the currents, wind and waves every day. We have found a great site that helps us a lot with this:

It will be impossible for us to swim against the current and the waves, since big waves easily build up in this sea. Therefore we may have to change the planned legs, the stretches and point of start and finish. All in order for us to increase the chances of our success. On top of that we are crossing some very busy seas where trade ships cross all the time. This demands that our boat captains will have to be very attentive and pick us up out of the water as soon as we come to close to a ship.

Anyway, the master plan is:

We will start from a small village called Saeby some 20 km south of Fredrikshamn.

From there we will swim the ca 20 km to the western tip of Laesö and from there run to Vesterö Havn

Next part is to run the half marathon to the eastern tip of the island and head out into the water to meet up with our boats. This is where the fun begins. We will now have a staggering 40 km swim over from Denmark to the Swedish island called Tistlarna. We believe this particular crossing will take us two days to complete.

After this we aim to head into mainland through the southern Gothenburg archipelago.

All in all this will take us 4-5 days total and consists of 75 km swim and some 35 km running. A swim ratio of 68%!


As far as we know, no one has done this before us. We are very well aware of why. It is very hard and many conditions must be just right. However, if we were not to make it we see this as a practice run. We will learn so much doing this which will make us even stronger the next time. But the hard part of it is also the fun part. We usually say, it doesn’t have to be fun in order to be fun. Pushing yourself harder than you thought possible is not always “ha ha” funny while you do it, but it brings an exceptional feeling in return when you feel you really did your everything. It makes you feel invincible. We know that we will have to dig really deep in our most inner caves of strength and we know it will be very cold and our bodies will hurt. But it will be worth it.

So this really isn’t a competition, it is a challenge… It is a challenge where two 40-year-old dads set a high goal and see if they can reach it….

… to be continue with gear and loads more in a couple of days.

You can follow us on our adventure on Facebook and Instagram 

/Team Kattegatt Swimrun